<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true" >
      <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品的名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
    
  </view>
</template>

<script>
import { mapState, mapMutations, mapGetters } from 'vuex'
  
  export default {
    computed: {
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      // total(newVal) {
      //   const findResult = this.options.find(x => x.text === '购物车')
      //   if(findResult) {
      //     findResult.info = newVal
      //   }
      // }
      total: {
        handler(newVal) {
            const findResult = this.options.find(x => x.text === '购物车')
            if(findResult) {
              findResult.info = newVal
            }
        },
        immediate: true
      }
    },
    data() {
      return {
        goods_info: {},
        options: [ {
                    icon: 'shop',
                    text: '店铺',
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      ...mapMutations('m_cart', ['addToCart']),
      async getGoodsDetail(goods_id) {
        const {data: res} = await uni.$http.get('/api/public/v1/goods/detail', {goods_id: goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
         
         res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display: block;"').replace(/webp/g, 'jpg')
        
        this.goods_info = res.message
        
      },
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e) {
        if(e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
        if(e.content.text === '加入购物车') {
          // 组织商品信息对象
          // { goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          
          // 调用addToCart() 方法
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
swiper {
  height: 700rpx;
  
  image {
    width: 100%;
    height: 100%;
  }
}

.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .price {
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
      }
      
    .goods-info-body {
      display: flex;
      justify-content: space-between;
      .goods-name {
        font-size: 13px;
        margin-right: 10px;
      }
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }
    .yf {
      font-size: 12px;
      color: gray;
      margin: 10px 0;
    }

}

.goods_nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}

.goods-detail-container {
  padding-bottom: 50px;
}
</style>
